diff --git a/src/components/business/construction/item-management/ItemDetailClient.tsx b/src/components/business/construction/item-management/ItemDetailClient.tsx
index 9fecdcdb..00f21ba4 100644
--- a/src/components/business/construction/item-management/ItemDetailClient.tsx
+++ b/src/components/business/construction/item-management/ItemDetailClient.tsx
@@ -22,10 +22,9 @@ import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
 import { IntegratedDetailTemplate } from '@/components/templates/IntegratedDetailTemplate';
 import { itemConfig } from './itemConfig';
 import { toast } from 'sonner';
-import type { ItemFormData, ItemType, Specification, OrderType, ItemStatus, OrderItem } from './types';
+import type { ItemFormData, ItemType, OrderType, ItemStatus, OrderItem } from './types';
 import {
   ITEM_TYPE_OPTIONS,
-  SPECIFICATION_OPTIONS,
   ORDER_TYPE_OPTIONS,
   STATUS_OPTIONS,
   UNIT_OPTIONS,
@@ -42,8 +41,7 @@ const initialFormData: ItemFormData = {
   itemNumber: '',
   itemType: '제품',
   categoryId: '',
-  itemName: '',
-  specification: '인정',
+  itemName: '', specification: '',
   unit: 'SET',
   orderType: '경품발주',
   status: '사용',
@@ -322,22 +320,13 @@ export default function ItemDetailClient({
                 </div>
                 <div className="space-y-2">
                   <Label htmlFor="specification">규격</Label>
-                  <Select
+                  <Input
+                    id="specification"
                     value={formData.specification}
-                    onValueChange={(v) => handleFieldChange('specification', v as Specification)}
+                    onChange={(e) => handleFieldChange('specification', e.target.value)}
+                    placeholder="규격을 입력하세요 (예: 1∅220V)"
                     disabled={isViewMode}
-                  >
-                    <SelectTrigger>
-                      <SelectValue placeholder="규격 선택" />
-                    </SelectTrigger>
-                    <SelectContent>
-                      {SPECIFICATION_OPTIONS.filter((o) => o.value !== 'all').map((option) => (
-                        <SelectItem key={option.value} value={option.value}>
-                          {option.label}
-                        </SelectItem>
-                      ))}
-                    </SelectContent>
-                  </Select>
+                  />
                 </div>
               </div>
 
diff --git a/src/components/business/construction/item-management/ItemManagementClient.tsx b/src/components/business/construction/item-management/ItemManagementClient.tsx
index 27296161..70772bd0 100644
--- a/src/components/business/construction/item-management/ItemManagementClient.tsx
+++ b/src/components/business/construction/item-management/ItemManagementClient.tsx
@@ -12,7 +12,7 @@ import { UniversalListPage, type UniversalListConfig, type TableColumn, type Fil
 import { MobileCard } from '@/components/organisms/MobileCard';
 import { toast } from 'sonner';
 import { DeleteConfirmDialog } from '@/components/ui/confirm-dialog';
-import type { Item, ItemStats, ItemType, Specification, OrderType, ItemStatus } from './types';
+import type { Item, ItemStats, ItemType, OrderType, ItemStatus } from './types';
 import {
   ITEM_TYPE_OPTIONS,
   SPECIFICATION_OPTIONS,
@@ -59,7 +59,7 @@ export default function ItemManagementClient({
   const [searchValue, setSearchValue] = useState('');
   const [itemTypeFilter, setItemTypeFilter] = useState<ItemType | 'all'>('all');
   const [categoryFilter, setCategoryFilter] = useState<string>('all');
-  const [specificationFilter, setSpecificationFilter] = useState<Specification | 'all'>('all');
+  const [specificationFilter, setSpecificationFilter] = useState<string>('all');
   const [orderTypeFilter, setOrderTypeFilter] = useState<OrderType | 'all'>('all');
   const [statusFilter, setStatusFilter] = useState<ItemStatus | 'all'>('all');
   const [sortBy, setSortBy] = useState<'latest' | 'oldest'>('latest');
@@ -479,7 +479,7 @@ export default function ItemManagementClient({
         setCategoryFilter(value as string);
         break;
       case 'specification':
-        setSpecificationFilter(value as Specification | 'all');
+        setSpecificationFilter(value as string);
         break;
       case 'orderType':
         setOrderTypeFilter(value as OrderType | 'all');
diff --git a/src/components/business/construction/item-management/actions.ts b/src/components/business/construction/item-management/actions.ts
index f7128447..4b971bfb 100644
--- a/src/components/business/construction/item-management/actions.ts
+++ b/src/components/business/construction/item-management/actions.ts
@@ -37,12 +37,13 @@ function transformToBackendItemType(frontendType: ItemType): string {
 }
 
 /**
- * Backend options → Frontend specification 변환
+ * Backend attributes.spec → Frontend specification 변환
+ * 실제 규격 텍스트 (예: "1∅220V", "면적 18.1m²")
  */
-function transformSpecification(options: Record<string, unknown> | null | undefined): Specification {
-  const spec = options?.specification;
-  if (spec === '인정' || spec === '비인정') return spec;
-  return '인정'; // 기본값
+function transformSpecification(attributes: Record<string, unknown> | null | undefined): Specification {
+  const spec = attributes?.spec;
+  if (typeof spec === 'string' && spec.trim()) return spec.trim();
+  return '-';
 }
 
 /**
@@ -95,6 +96,7 @@ interface ApiItem {
   category?: { name?: string } | null;
   unit: string | null;
   options: Record<string, unknown> | null;
+  attributes: Record<string, unknown> | null;
   is_active: boolean;
   description: string | null;
   created_at: string;
@@ -110,7 +112,7 @@ function transformItem(apiItem: ApiItem): Item {
     categoryId: apiItem.category_id ? String(apiItem.category_id) : '',
     categoryName: apiItem.category?.name || '',
     unit: apiItem.unit || 'EA',
-    specification: transformSpecification(apiItem.options),
+    specification: transformSpecification(apiItem.attributes),
     orderType: transformOrderType(apiItem.options),
     status: transformStatus(apiItem.is_active, apiItem.options),
     createdAt: apiItem.created_at,
@@ -141,8 +143,10 @@ function transformItemToApi(data: ItemFormData): Record<string, unknown> {
     unit: data.unit,
     is_active: data.status === '사용' || data.status === '승인',
     description: data.note || null,
+    attributes: {
+      spec: data.specification || null,
+    },
     options: {
-      specification: data.specification,
       orderType: data.orderType,
       status: data.status,
       orderItems: data.orderItems,
diff --git a/src/components/business/construction/item-management/constants.ts b/src/components/business/construction/item-management/constants.ts
index d9c33fd2..a3fe2e47 100644
--- a/src/components/business/construction/item-management/constants.ts
+++ b/src/components/business/construction/item-management/constants.ts
@@ -11,11 +11,9 @@ export const ITEM_TYPE_OPTIONS: { value: ItemType | 'all'; label: string }[] = [
   { value: '공과', label: '공과' },
 ];
 
-// 규격 옵션
-export const SPECIFICATION_OPTIONS: { value: Specification | 'all'; label: string }[] = [
+// 규격 필터 옵션 (규격 있음/없음)
+export const SPECIFICATION_OPTIONS: { value: string; label: string }[] = [
   { value: 'all', label: '전체' },
-  { value: '인정', label: '인정' },
-  { value: '비인정', label: '비인정' },
 ];
 
 // 구분(발주유형) 옵션
diff --git a/src/components/business/construction/item-management/types.ts b/src/components/business/construction/item-management/types.ts
index 22ee6832..5db1ac3f 100644
--- a/src/components/business/construction/item-management/types.ts
+++ b/src/components/business/construction/item-management/types.ts
@@ -3,8 +3,8 @@
 // 물품유형
 export type ItemType = '제품' | '부품' | '소모품' | '공과';
 
-// 규격
-export type Specification = '인정' | '비인정';
+// 규격 (실제 스펙 텍스트, 예: "1∅220V", "면적 18.1m²")
+export type Specification = string;
 
 // 구분 (발주유형)
 export type OrderType = '경품발주' | '원자재발주' | '외주발주';